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authorShannon Nelson <shannon.nelson@intel.com>2007-10-16 01:27:40 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:09 -0700
commit3e037454bcfa4b187e8293d2121bd8c0f5a5c31c (patch)
tree751a2eace11b280cc1a19873788b778009188be9 /drivers/dma/ioatdma.h
parent8ab89567da0cea9bae2c1b5dad47b51c424479e4 (diff)
I/OAT: Add support for MSI and MSI-X
Add support for MSI and MSI-X interrupt handling, including the ability to choose the desired interrupt method. Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Acked-by: David S. Miller <davem@davemloft.net> [bunk@kernel.org: drivers/dma/ioat_dma.c: make 3 functions static] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/dma/ioatdma.h')
-rw-r--r--drivers/dma/ioatdma.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/dma/ioatdma.h b/drivers/dma/ioatdma.h
index 0b8ffbde1e61..2abf0b88a973 100644
--- a/drivers/dma/ioatdma.h
+++ b/drivers/dma/ioatdma.h
@@ -28,6 +28,14 @@
#include <linux/cache.h>
#include <linux/pci_ids.h>
+enum ioat_interrupt {
+ none = 0,
+ msix_multi_vector = 1,
+ msix_single_vector = 2,
+ msi = 3,
+ intx = 4,
+};
+
#define IOAT_LOW_COMPLETION_MASK 0xffffffc0
/**
@@ -46,6 +54,9 @@ struct ioatdma_device {
struct pci_pool *completion_pool;
struct dma_device common;
u8 version;
+ enum ioat_interrupt irq_mode;
+ struct msix_entry msix_entries[4];
+ struct ioat_dma_chan *idx[4];
};
/**
@@ -94,6 +105,7 @@ struct ioat_dma_chan {
u32 high;
};
} *completion_virt;
+ struct tasklet_struct cleanup_task;
};
/* wrapper around hardware descriptor format + additional software fields */